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Rock Breakage and Tools Performance During Rock Processing by Multidiameter Combination Saw with Different Diameters
Abstract To better understand the rock breakage mechanism and optimize tool performance during rock machining by multidiameter combination saw, the rock processing experiment using a multidiameter combination saw was carried out on the bridge saw to investigate the variation of load with diameter in the combination saw. Furthermore, in this study, the sawing forces, tools wear, and rock breakage in the processing rock were qualitatively analyzed and compared. The experimental investigations demonstrated that the maximum undeformed chip thickness, the load per diamond, and the load in the sawing arc zone all decrease with increasing diameters of the single saw in the combination saw. The sum of the vertical forces of the single saw is generally less than that of the combination saw under the same parameters because of the existence of the coupling effect between the single saws. Different failure mechanisms of particles in the worn segment of the tool with different diameters also operate in rock processing using a multidiameter combination saw. With increasing diameter of saw blade, the proportion of the whole and blunt diamond particles increases, and that of the macro-fractured and pulled-out crystals decreases. Moreover, the differences in the surface integrity are attributed to the variation in the maximum undeformed chip thickness on the saw blade with different diameters in the combination saw and the gully depth on the surface, and the surface roughness of rock decreases with increasing diameter of the single saw.
Highlights The experiments for rock processing by a multidiameter combination saw are designed to investigate the sawing performance of multidiameter combination circular saw with different diameters.Different failure mechanisms of particles in the worn segment of the tool with different diameters operate in rock processing using a multidiameter combination saw.The differences in the surface integrity are attributed to the variation in the maximum undeformed chip thickness on the saw blade with different diameters in the combination saw.Coupling effect between the single saws affects decomposition and generation of forces in the multidiameter saw.
Rock Breakage and Tools Performance During Rock Processing by Multidiameter Combination Saw with Different Diameters
Abstract To better understand the rock breakage mechanism and optimize tool performance during rock machining by multidiameter combination saw, the rock processing experiment using a multidiameter combination saw was carried out on the bridge saw to investigate the variation of load with diameter in the combination saw. Furthermore, in this study, the sawing forces, tools wear, and rock breakage in the processing rock were qualitatively analyzed and compared. The experimental investigations demonstrated that the maximum undeformed chip thickness, the load per diamond, and the load in the sawing arc zone all decrease with increasing diameters of the single saw in the combination saw. The sum of the vertical forces of the single saw is generally less than that of the combination saw under the same parameters because of the existence of the coupling effect between the single saws. Different failure mechanisms of particles in the worn segment of the tool with different diameters also operate in rock processing using a multidiameter combination saw. With increasing diameter of saw blade, the proportion of the whole and blunt diamond particles increases, and that of the macro-fractured and pulled-out crystals decreases. Moreover, the differences in the surface integrity are attributed to the variation in the maximum undeformed chip thickness on the saw blade with different diameters in the combination saw and the gully depth on the surface, and the surface roughness of rock decreases with increasing diameter of the single saw.
Highlights The experiments for rock processing by a multidiameter combination saw are designed to investigate the sawing performance of multidiameter combination circular saw with different diameters.Different failure mechanisms of particles in the worn segment of the tool with different diameters operate in rock processing using a multidiameter combination saw.The differences in the surface integrity are attributed to the variation in the maximum undeformed chip thickness on the saw blade with different diameters in the combination saw.Coupling effect between the single saws affects decomposition and generation of forces in the multidiameter saw.
Rock Breakage and Tools Performance During Rock Processing by Multidiameter Combination Saw with Different Diameters
Zhou, Jingguo (author) / Wang, Kaida (author) / Zhang, Jinsheng (author) / Zhang, Heng (author) / Cao, Tianyu (author) / Ju, Junwei (author)
2022
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
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